diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6b9327ad..1842dce3 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -18,7 +18,11 @@ jobs:
         - { ruby_version: '3.2', rails_gemfile: '7.2', postgres_version: '12' }
         - { ruby_version: '3.2', rails_gemfile: '7.2', postgres_version: '13' }
         - { ruby_version: '3.2', rails_gemfile: '7.2', postgres_version: '14' }
-        exclude: []
+        exclude: # Rails 7.2 is not compatible with Ruby < 3.1
+        - ruby_version: '2.7'
+          rails_gemfile: '7.2'
+        - ruby_version: '3.0'
+          rails_gemfile: '7.2'
     name: "Test: Ruby ${{ matrix.ruby_version }}, Rails ${{ matrix.rails_gemfile }}, PostgreSQL ${{ matrix.postgres_version }}"
     services:
       db: